GBA Logo horizontal Facebook LinkedIn Email Pinterest Twitter Instagram YouTube Icon Navigation Search Icon Main Search Icon Video Play Icon Plus Icon Minus Icon Picture icon Hamburger Icon Close Icon Sorted

Community and Q&A

Headers BELOW windows?

Jerry Liebler | Posted in General Questions on

I plan on building on a PWF. The nature of PWF suggests it is fine with distributed loads but it’s capability to handle point loads is less obvious. My south wall will have several 6 foot wide windows. normally a header above the window concentrates the distributed load from above into point loads at the sides of the opening. I’m thinking of adding headers below the windows to “re-distribute” the loads to the foundation. I have 2 parallel 2×4 walls. In all cases the headers will be plywood box headers with 1×3 internals and 1/2′ plywood faces, insulated with 2 1/5″ mineral wool. What level of excess is the header below?

GBA Prime

Join the leading community of building science experts

Become a GBA Prime member and get instant access to the latest developments in green building, research, and reports from the field.

Replies

  1. GBA Editor
    Martin Holladay | | #1

    Jerry,
    If you are building a permanent wood foundation (PWF), I can't think of any reason why the wood studs of your foundation wall can't handle the loads transferred from above. Nor can I think of any reason why a header installed under a window would be advantageous.

    But if you're worried about the ability of your foundation to handle the loads, you should consult an engineer.

Log in or create an account to post an answer.

Community

Recent Questions and Replies

  • |
  • |
  • |
  • |